import ffmpeg

inputVideoName = "D:\\tongtong\\shortPlay\\不良人短剧导入测试\\不良人4.mp4";
input_video = ffmpeg.input(inputVideoName)
outputVideoName = "D:\\tongtong\\shortPlay\\不良人短剧导入测试\\不良人4.avi";
output_video = ffmpeg.output(input_video, outputVideoName)
ffmpeg.run(output_video)